Home / 515,212.80-771,782.40-347,251.20

Finding the Fourth Proportional to 515,212.80, 771,782.40 and 347,251.20

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Solution

The fourth proportional to 515,212.80, 771,782.40 and 347,251.20 is: 520,178.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,212.80 : 771,782.40 = 347,251.20 : x
  2. Step 2: Convert to fraction form
    515,212.80/771,782.40 = 347,251.20/x
  3. Step 3: Cross multiply
    515,212.80x = 771,782.40 × 347,251.20
  4. Step 4: Simplify right side
    515,212.80x = 268,002,364,538.88
  5. Step 5: Solve for x
    x = 268,002,364,538.88/515,212.80
  6. Step 6: Final answer
    x = 520,178.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.